Many spend on increased comfort, whatever that might be... my college roommate who was very successful flies private now, though it took him a couple of years to admit it... sure, it would not feel worthwhile for near everyone, but he has so much, he is not going to run out of money, so, why not?
My curiosity is, what would increased comfort be for others?
Personally, as a lifetime saver/investor, I have trouble adjusting to being a spender. Any extravagance rarely seems worth the price. I did buy a nice resort style home which has probably doubled in 4 years...